Acrophobia? – Sears Tower unveils glass balconies on Skydeck.
People look at the view of Chicago from “The Ledge” a five-sided glass box 1,353 feet (412 meters) above the street in Chicago July 1, 2009. The Ledge is part of Skydeck Chicago located on the 103rd floor of the Sears Tower. It opens to the public on July 2.
(Hat tip: Archinect)